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Severity: Notice
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Filename: controllers/presentation.php
Line Number: 875
Severity: Notice
Message: Trying to get property of non-object
Filename: controllers/presentation.php
Line Number: 875
Author(s):
1. Darko Manjenčić, business organization Novohem, Serbia
2. Milorad Tomić, University of East Sarajevo, Faculty of Technology,
Republic of Srpska, Bosnia and Herzegovina
3. Anja Manjenčić, Medicinski fakultet Univerziteta u Beogradu, Serbia
Applied paper from author